System and method for locating products in a retail system

ABSTRACT

A system for displaying, and redeeming electronic discount coupons in a store. The system includes a &#34;smart card&#34;, a display kiosk, and a checkout station in the checkout area. The customer comes to the store with the card loaded with electronic coupons. At any time, the customer may insert the card into the display kiosk to view the location of products corresponding to the coupons stored on the card. Upon completion of shopping, the customer redeems the electronic coupons at the checkout area, by inserting the card into the checkout station. During checkout, when UPC data matches a coupon stored on the card, the customer is credited with the value of the corresponding coupon.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates generally to a retail system and, moreparticularly, to a system and method for locating products in a retailsystem.

2. Description of Related Art

Discount coupons are a popular means to stimulate sales of products suchas grocery store items. In 1992, approximately 310 billion coupons weredistributed and 7.7 billion coupons were redeemed, saving customers $4billion. It has been estimated that in-store couponing coupled withadvertising increases sales by 544%.

A typical marketing scheme involves placing coupons in a newspaper, byprinting the coupons in the newspaper or by inserting coupon insertsinto the newspaper, and allowing customers to bring the printed couponsto a store for redemption. One problem with this scheme is that theredemption rate is typically only a few percent of the coupons printed,the unredeemed coupons representing an overhead associated with thisscheme. To alleviate this overhead, another marketing scheme involvesdistributing the coupons in the store, thereby avoiding the cost ofprinting coupons in a newspaper, and capitalizing on the fact that 66%of buyer decisions are made at the time of product purchase. Both thein-store scheme and the newspaper scheme, however, are susceptible tofraud by an unscrupulous retailer that requests reimbursement paymentsby presenting unredeemed coupons to the clearing house. Other schemesinclude delivering coupons to customers through the mail, distributingcoupons in or on the product package, and distributing coupons atcheckout. All of these schemes have an overhead cost of handling thecoupons and of sending the redeemed coupons to a clearing house toenable product manufacturers to reimburse retailers for the reduction inproceeds resulting from coupon redemptions.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a convenient andstimulating shopping environment that allows the customer to acquirediscount coupons and to locate the products corresponding to theacquired coupons.

To achieve this and other objects of the present invention, in a systemincluding a communication device and a plurality of portable cards eachhaving a memory, a method of operating the system comprises the steps ofreading a first signal from the memory of a card in the plurality ofcards, in response to a person presenting the card at the communicationdevice, the first signal corresponding to a product, the first signalhaving a respective field for designating a coupon redemption value;generating, responsive to the first signal, a second signalcorresponding to a location of the product; and displaying the secondsignal.

According to another aspect of the present invention, a retail systemcomprises a plurality of portable cards each having a respective memoryfor storing a first signal corresponding to a product, the first signalhaving a respective field for designating a coupon redemption value; acommunication device; first memory area; a reader for reading the firstsignal from the memory of a card in the plurality of cards, in responseto a person presenting the card at the communication device; a generatorfor accessing the first memory area, using the first signal, to generatea second signal corresponding to a location of the product; and adisplay for displaying the second signal.

According to yet another aspect of the present invention, a method ofoperating a retail system including a plurality of product areas, aplurality of portable cards each having a memory, a first communicationdevice, and a checkout area having a second communication device,comprises the steps of a first reading step of reading a first signalfrom the memory of a card in the plurality of cards, in response to aperson presenting the card at the first communication device, the firstsignal corresponding to a product in one of the product areas, the firstsignal having a respective field for designating a coupon redemptionvalue; displaying a location of the product in accordance with the firstsignal; removing the product from the product area; and a second readingstep of reading the first signal from the memory of the card, inresponse to a person presenting the card at the second communicationdevice.

According to yet another aspect of the present invention, in a systemincluding a communication device and a plurality of portable cards eachhaving a memory, a method of operating the system comprises the steps ofreading a first signal from the memory of a card in the plurality ofcards, in response to a person presenting the card at the communicationdevice, the first signal corresponding to a product; generating,responsive to the first signal, a second signal corresponding to alocation of the product on a map; and displaying the second signal.

According to yet another aspect of the present invention, a retailsystem comprises a plurality of portable cards each having a respectivememory for storing a first signal corresponding to a product; acommunication device; first memory area; a reader for reading the firstsignal from the memory of a card in the plurality of cards, in responseto a person presenting the card at the communication device; a generatorfor accessing the first memory area, using the first signal, to generatea second signal corresponding to a location of the product on a map; anda display for displaying the second signal.

According to yet another aspect of the present invention, a method ofoperating a retail system including a plurality of product areas, aplurality of portable cards each having a memory, a first communicationdevice, and a checkout area having a second communication device,comprises the steps of a first reading step of reading a first signalfrom the memory of a card in the plurality of cards, in response to aperson presenting the card at the first communication device, the firstsignal corresponding to a product in one of the product areas;displaying, responsive to the first signal, a location of the product ona map; removing the product from the product area; and a second readingstep of reading the first signal from the memory of the card, inresponse to a person presenting the card at the second communicationdevice.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a retail system in accordance with afirst preferred embodiment of the present invention.

FIG. 2 is a drawing of a home computer in the first preferred retailsystem.

FIG. 3 is a plan view of a retail store in the first preferred system.

FIGS. 4A and 4B are another type of view of the retail store.

FIG. 5 is a drawing of portion of the display kiosk shown in FIG. 4A.

FIGS. 6A, 6B, and 6C are enlarged views of some products shown in FIGS.4A and 4B.

FIG. 7A is a plan view of one of the customer cards in the preferredsystem.

FIG. 7B is a side view of the card shown in FIG. 7A.

FIG. 7C is an enlarged, partial view of the card shown in FIG. 7A.

FIG. 8 is a block diagram of the customer card.

FIG. 9 is a diagram of some memory contents of one of the customer card.

FIG. 10 is a block diagram of the first preferred display kiosk shown inFIGS. 1, 3, and 4A.

FIGS. 11A and 11B are diagrams of some data structures in the firstpreferred display kiosk.

FIG. 12 is a block diagram of the check-out station shown in FIG. 4B.

FIG. 13 is a flow chart of a processing performed by the display kiosk.

FIGS. 14A and 14B are a flow chart showing a portion of the processingof FIG. 13 in more detail.

FIGS. 15A, 15B, 15C, and 15D are diagrams showing data paths within thedisplay kiosk during the execution of the processing shown in FIGS. 14Aand 14B.

FIG. 16 is a diagram of a CRT display generated by the display kiosk.

FIG. 17 is a diagram of a paper printout generated by the display kiosk.

FIG. 18 is a flow chart of a processing performed by the check-outstation.

FIG. 19 is a flow chart of a processing performed by one of the customercards.

FIG. 20 is a block diagram of a system including a market researchcenter and multiple check-out stations.

FIG. 21 is a block diagram of a display kiosk in accordance with asecond preferred embodiment of the present invention.

FIGS. 22A, 22B, and 22C are diagrams of some data structures in thesecond preferred display kiosk shown in FIG. 21.

FIG. 23 is a flow chart of a processing performed by the secondpreferred display kiosk.

FIGS. 24A and 24B are a flow chart showing a portion of the processingof FIG. 23 in more detail.

FIGS. 25A, 25B, 25C, and 25D are diagrams showing data paths within thedisplay kiosk during the execution of the processing shown in FIGS. 24Aand 24B.

FIG. 26 is a diagram of a CRT display generated by the second preferreddisplay kiosk.

The accompanying drawings which are incorporated in and which constitutea part of this specification, illustrate embodiments of the inventionand, together with the description, explain the principles of theinvention, and additional advantages thereof. Throughout the drawings,corresponding parts are labeled with corresponding reference numbers.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 shows a system of distributing discount coupons to retailcustomers in accordance with a first preferred embodiment of the presentinvention. The first preferred system includes computer networks 1020,residential homes 1025, 1035, and 1030, portable cards 295, 315, 285,and store 1000. A coupon-dispensing computer within computer networks1020 stores electronic coupons and distributes the stored coupons to thehomes via telephone signal paths 180. A computer and special processorin each of homes 1025, 1030, and 1035 has hardware and software forreceiving a coupon from computer networks 1020 and storing the coupon oneach of portable cards 295, 315, and 285, respectively. Customers thenbring cards 295, 315, and 285 to store 1000, as shown schematically inFIG. 1.

Store 1000 includes roof structure 1017 and display kiosk 1710 underroof structure 1017. Roof structure 1017 includes roof section 1010,window 1015 coupled to roof section 1010, and roof section 1005 coupledto window 1015. Display kiosk 1710 includes circuitry (hardware andsoftware) for reading product identification data from a portable cardand displaying information about the product identified by the data,including an image of the product and a spacial location of the product,as discussed in more detail below.

FIG. 2 shows a part of home 1035 in more detail. Home 1035 includespersonal computer 2000 having keyboard 2425, cathode ray tube (CRT)2420, and mouse 2423. To receive an electronic coupon, the userestablishes a telephone connection between computer 2000 and a computerwithin network 1020 through modem 2410. Subsequently, the user logs ontothe computer within network 1020 and reads Electronic mail sent by thecoupon-dispensing computer. The customer then prints the mail message toloading device 2415. Device 2415 receives a customer card 315. A devicedriver program, executed by PC 2000, and device 2415 act to translatethe textual electronic mail message into a binary electronic coupon andwrite the coupon onto card 315. In other words, device 2415 writes aproduct identification signal, corresponding to a selected product, ontothe customer card 315.

An invention embodied in this process of sending discount coupons to acustomer card is the subject of copending U.S. application Ser. No.08/603,482 of KEN R. POWELL for SYSTEM AND METHOD FOR DISTRIBUTINGCOUPONS THROUGH A SYSTEM OF COMPUTER NETWORKS, filed Feb. 20, 1996, thecontents of which is herein incorporated by reference.

FIG. 3 is a plan view of store 1000, including Shelves 11, 12, 21, 22,31, and 32; and product areas 111, 121, 110, 120, 130, 141, 151, 161,140, 150, 160, 171, 181, 170, 180,and 190. Customers shop in store 1000,by removing products from the shelves and bringing the products tocheckout counter 900. When a customer visits store 1000, a customer caninsert their customer card to display kiosk 1710 to view informationabout information about the products identified on the card, includingthe appearance and location of the product.

In FIG. 3, shelf assembly 10 includes shelf 11, which is designated as"SHELF A" by a poster within store 1000, and shelf 12, designated "SHELFB" by a poster within store 1000. Shelf assembly 20 includes shelf 21,designated "SHELF C" by a poster with store 1000, and shelf 22,designated "SHELF D" by a poster within store 1000. Shelf assembly 30includes shelf 31, designated "SHELF E" by a poster within store 1000,and shelf 32, designated "SHELF F" by a poster within store 1000.

Shelf assembly 10 and wall 14 define an aisle 15. Aisle 15 is designated"AISLE 1" by a poster within store 1000. Shelf assembly 10 and shelfassembly 20 define aisle 16. Aisle 16 is designated "AISLE 2" by aposter within store 1000. Shelf assembly 20 and shelf assembly 30 definean aisle 24. Aisle 24 is designated "AISLE 3" by a poster within store1000. Shelf assembly 30 and checkout counter 900 define an aisle 34.Aisle 34 is designated "AISLE 4" by a poster within store 1000.

FIGS. 4A and 4B show another view of store 1000 in accordance with afirst preferred embodiment of the present invention. FIGS. 4A and FIG.4B are each a partial view of store 1000. Customers 210, 220, 230, 240,250, 270, 280, and 290, shop in store 1000.

Store 1000 includes shelve assemblies 10, 20, and 30, defining aislesbetween the shelves. Store 1000 has a plurality of product areas, eachcorresponding to a respective product. Product Area 110 has Acme brandammonia. Product Area 120 has Old World brand pasta. Product Area 130has Lighthouse brand light bulbs.

In FIGS. 4A and 4B, poster 9 contains the text SHELF B, allowing thecustomers to identify the shelf containing product areas 110, 160, and130 as shelf B. Poster 19 contains the text SHELF D, allowing thecustomers to identify the shelf containing the product areas 140, 150,and 120 as shelf D. Poster 29 contains the text SHELF F, allowing thecustomers to identify the shelf containing product areas 170, 180, and190 as shelf F. Similarly, other posters (not shown) identify othershelves and aisles within store 1000.

Because of the large number of coupons that may be available to acustomer, from either in the store or outside the store, a customer suchas customer 310 may wish to present their card 315 to display kiosk1710. Kiosk 1710 has circuitry for displaying information about thecoupons loaded onto the card, including the product and discount amountof the coupon. Kiosk 1710 also has circuitry for displaying informationabout the products corresponding to the coupons loaded onto the card,including a verbal description of the product, an image of the product,and a spacial location of the product. Kiosk 1710 has circuitry todisplay information on paper 1719, using printer 1718, or on cathode raytube (CRT) 1717.

FIG. 5 shows a section of display kiosk 1710 in more detail. Interfaceslot 1715 has a width sufficient to accommodate the width of one of thecustomer cards. When a customer card is in interface slot 1715,conductive contact 1777 inside interface slot 1715 touches contact 7427(shown in FIG. 7C) on a customer card. Interface slot 1715 has othercontacts (not shown) for touching the other card contacts 7420 (shown inFIG. 7C). The operation of station 1710 will be discussed in more detailbelow.

FIG. 6A shows an enlarged view of some of the bottles of ammonia 112.Each bottle of ammonia has a common Universal Product Code (UPC) label114, which is a group of parallel lines that encodes a number(7170312780) that uniquely identifies acme ammonia. In other words,label 114 is different than labels of units of other products. Eachbottle of ammonia 112 also has a common character label 113 thatverbally describes the product. Character label 113 is "ACME AMMONIA."Label 113 is different than labels of units of other products.

Product Area 120 has boxes of pasta 122 grouped together on multipleshelves. Boxes of pasta 120 are contiguously grouped, meaning that noother product is between any two boxes of pasta 120. No other product isbetween product station 125 and boxes of pasta 122. Product Station 125is on a shelf under some of the boxes 122. In other words, station 125is adjacent to boxes 122 and supported by a shelf in vertical alignmentwith some of the boxes 122.

FIG. 6B shows an enlarged view of some of the boxes of pasta 122. Eachbox of pasta 122 has a common Universal Product Code (UPC) label 124,which is a group of parallel lines that encodes a number (7170312682)that uniquely identifies Old World pasta. In other words, label 124 isdifferent than labels of units of other products. Each box of pasta 122also has a common character label 123 that verbally describes theproduct. Character label 123 is "OLD WORLD PASTA." Label 123 isdifferent than labels of units of other products.

Product Area 130 has boxes of light bulbs 132 grouped together onmultiple shelves. Boxes of light bulbs 132 are contiguously grouped,meaning that no other product is between two boxes of light bulbs 132.No other product is between product station 135 and boxes of light bulbs132. Product Station 135 is on a shelf under some of the boxes 132. Inother words, station 135 is adjacent to boxes 132 and supported by ashelf in vertical alignment with some of the boxes 132.

FIG. 6C shows an enlarged view of some of the boxes of light bulbs 132.Each box of light bulbs 132 has a common Universal Product Code (UPC)label 134, which is a group of parallel lines that encodes a number(7170312350) that uniquely identifies Lighthouse light bulbs. In otherwords, label 134 is different than labels of other products. Each box132 also has a common character label 133 that verbally describes theproduct. Character label 133 is "LIGHTHOUSE LIGHT BULBS." Label 133 isdifferent than labels of other products.

Similarly, other product area in the store each have a set of respectiveproducts contiguously grouped together. The respective units of acertain product have a common label, different than labels on units ofother products, that uniquely identifies the certain product. Productarea 140 has bottles of ketchup 142 contiguously grouped together.Product area 160 has loaves of bread 162 contiguously grouped together.Product area 170 has cartons of milk 172 contiguously grouped together.Product area 180 has packages of bacon 182. Product area of 190 haspackages of butter 192 contiguously grouped together. Product area 111(FIG. 3) has boxes of paper towels contiguously grouped together.Product area 121 has rolls of paper towel contiguously grouped together.Product area 141 has boxes of crackers contiguously grouped together.Product area 151 has canned fruit contiguously grouped together. Productarea 161 has canned vegetables contiguously grouped together. Productarea 171 has cans of meat contiguously grouped together. Product area181 has boxes of flour contiguously grouped together.

An overview of processing performed by the customers and hardware willnow be described. Before shopping in the store, each of these customersobtained a customer card. For example, customer 230 obtained customercard 235 from a bank, by completing an application for the bank. Theapplication contained questions to collect demographic data, includingbirth date, income level, past buying patterns, geographic location,size of family, level of education, and job-related data. The banksubsequently wrote customer identification data for customer 230 ontocustomer card 235, and issued customer card 235 to customer 230, andsent the customer's demographic data to a marketing research centerwhich then stored the demographic data on disk. Each of customers 210,220, 240, 250, 270, 280, and 290 obtains a respective customer card in asimilar manner. In other words, for each customer the preferred methodwrites demographic data for the customer onto a disk in market researchcenter, and writes personal identification data for the customer onto arespective card for the customer.

After redemption data, including customer identification data from aplurality of cards, is compiled and sent to a marketing research center,as described below, the customer identification data is used to accessthe corresponding demographic data, thereby providing the manufacturerwith valuable marketing data on coupon program effectiveness andcustomer demographics.

A customer may start shopping with a card already loaded with electroniccoupons. For example, the store may preload new cards as an incentivefor completing and submitting a check cashing application. Further, thecustomer may have a device at home, such as computer 2000 shown in FIG.2, for depositing coupons onto the card. Thus, a customer may arrive atstore 1000 with coupons already on the card.

While shopping in store 1000, each of customers 210, 220, 230, 240, 250,270, 280, and 290 carries his or her respective customer card. Customer210 carries card 215, customer 220 carries card 225, customer 230carries card 235, customer 240 carries card 245, customer 250 carriescard 255, customer 270 carries card 275, customer 280 carries card 285,and customer 290 carries card 295. Each customer tows a shopping cart tohold selected products. Customer 210 tows cart 212, customer 220 towscart 222, customer 230 tow cart 232, customer 240 tows cart 242,customer 250 tows cart 252, customer 270 tows cart 272, customer 280tows cart 282, and customer 290 tows care 292. Each customer removes oneor more desired products from a shelf and places the removed productinto her cart.

Upon completion of shopping, the customer brings selected products fromshelves 10, 20, and 30 to checkout counter 900. The customer redeems theelectronic coupons at the checkout area, by inserting her customer cardinto checkout station 915. For example, a customer such as customer 290in FIG. 4B completes the purchase of her selected products 293 bytransferring products 293 from her cart 292 to counter 900, and byinserting card 295 into checkout station 915. Subsequently, a checkoutclerk (not shown) scans each selected product past UPC bar code reader910. Bar code reader 910 is an optical detector. In other words, barcode reader 910 detects an electromagnetic signal. A processor coupledto station 915 and reader 910 determines whether the most recentlyscanned product is on a discount list stored in card 295. If the mostrecently scanned product is identified in this discount list, a pricefor the product is determined using the discount data corresponding tothe product, and the resulting price is displayed on display 917.Checkout counter 900 scans and processes each product 293 in a similarmanner.

Similarly customer 280 in FIG. 4B will complete the purchase of herselected products 283 by transferring products 283 from her cart 282 tocounter 900, and by inserting card 285 into checkout station 915; andthe checkout clerk (not shown) will scan each selected product 283 pastUPC bar code reader 910. Customer 270 will complete the purchase of herselected products 273 by transferring products 273 from her cart 272 tocounter 900, and by inserting card 275 into checkout station 915; andthe checkout clerk (not shown) will scan each selected product 273 pastUPC bar code reader 910.

Periodically, checkout counter 900 sends redemption data to anelectronic clearing house. The redemption data sent to the clearinghouse includes the identification of the store, identification of thecoupons redeemed and of respective quantities of coupon redemptions.Periodically, checkout counter 900 sends redemption data to a marketresearch center. The redemption data sent to the research centerincludes the identification of the store and of the customers whopresented electronic coupons for redemption.

The preferred system and method will now be described in more detail.

FIG. 7A shows a plan view of customer card 215 carried by customers 210,and FIG. 7B shows a side view of card 215. Card 215 is 8.5 cm by 5.4 cm,the length and width of a typical financial credit card. Card 215 isslightly thicker than a typical financial credit card. Card 215 includesa magnetic stripe 7410, interface contacts 7420 for communication withthe product stations and the checkout station, and embossed area 7430for displaying the card owner's name. Magnetic stripe 7410 allows aconventional credit card stripe reader to read basic data from the card.Magnetic stripe 7410 is not necessary to the operation of the preferredembodiment of the invention, described in more detail below.

FIG. 7C shows interface contacts 7420 in more detail. Interface contacts7420 are configured in accordance with IS07816-2: 1988(E),Identification cards--Integrated circuit (s) cards with contact--Part 2:Dimensions and locations of the contacts, promulgated by theInternational Organization for Standardization (ISO), and available fromthe American National Standards Institute (ANSI), 11 West 42nd Street,New York, N.Y. 10036. According to ISO 7816-2, contact 7421 is assignedto VCC (supply voltage), contact 7422 is assigned to RST (reset signal),contact 7423 is assigned to CLK (clock signal), contact 7424 is reservedfor future use, contact 7425 is assigned to GND (ground), contact 7426is assigned to VPP (program and voltage), contact 7427 is assigned toI/O (data input/output), and contact 7428 is reserved for future use.Card 215 communicates with the product stations and the checkoutstations through contact 7427 using a half duplex scheme, meaning thatcontact 7427 is for communicating data signals either to or from thecard.

FIG. 8 is a block diagram of customer card 215, including centralprocessing unit 8450, memory 8460, and battery 8470 for supplying powerto interface 8425, processor 8450, and memory 8460. Memory 8460 is arandom access, addressable device. Station interface 8425 includes aserial to parallel converter for transferring data signals betweencontact 8427 and CPU 8450 over parallel bus 8452. Memory 8460 stores aprogram 8465 executed by processor 8450, customer identification data8467, and authorization data 8468. Customer identification data 8467includes a sequence of digits that uniquely identifies the holder of thecard. Customer identification data 8467 includes the card holder'ssocial security number. For example, identification data 8467 incustomer card 235 uniquely identifies customer 230. Authorization data8468 includes a sequence of digits that includes a code identifying thestore or stores in which the card may be used to obtain a paperlesscoupon. Authorization data 8468 also includes date data indicating anexpiration date for the card. Depending on the card holder's contractualrelationship with the card issuer, the card issuer may periodicallyupdate this date data to renew the card when the current date dataindicates the card is expired. Store authorization data 8468 alsocontains a field identifying that the card is a customer card (ratherthan a programming card, which is described below).

Memory 8460 also stores product data received from one or more coupondispensing devices. This product data includes a list of productdiscounts 8435. When a customer inserts a customer card into a coupondispensing device, processor 8450 receives an identification code forthe product from the device and adds the code to the list.

FIG. 9 shows some the contents list 8435 starting at location 30 ofmemory 8460 of customer card 215. An electronic coupon is represented bythree rows in list 8435: a 10 digit UPC product code in the first row,discount fonnat data in the second row ("1" signifying cents, "2"signifying percentage), and discount quantity data in the third row. InFIG. 9, the customer card is storing three electronic coupons,reflecting the fact that customer 210 has received electronic couponsfrom devices either before or during her current visit to store 1000. Inlist 8435, the memory field having the product code 7170312682corresponds to the UPC code on boxes of Old World Pasta 124. The nextmemory field stores the format of the discount quantity data, with "1"signifying cents and "2" signifying percentage in tenths of a percent.The next memory field stores the discount quality data, 150, signifyingthat the discount being offered for Old World Pasta 124 is $1.50. Thememory field having the product code 7170312350 corresponds to the UPCcode on boxes of Lighthouse Light Bulbs 134. The next memory fieldstores the format of the discount quantity data, with "1" signifyingcents. The next memory field stores the discount quantity data, 200,signifying that the discount being offered for Lighthouse Light Bulbs134 is $2.00. The memory field having the product code 7170312780corresponds to the UPC code on ammonia bottles 112. The next memoryfield stores the format of the discount quantity data, with "1"signifying cents. The next memory field stores the discount quantitydata, 50, signifying that the discount being offered for ammonia bottles112 is 50 cents.

Each customer cards has the same hardware structure as customer card215.

Programming card 55 has the same hardware structure as customer card215. An invention embodied in programming card 55 is the subject ofcopending application of KEN R. POWELL for DEVICE AND METHOD OFPROGRAMMING A RETAIL SYSTEM, Ser. No. 08/468,820, filed on Jun. 6, 1995,the contents of which is herein incorporated by reference. The productstations are the subject of copending application of KEN R. POWELL forRETAIL SYSTEM, Ser. No. 08/468,816, filed on Jun. 6, 1995, now U.S. Pat.No. 5,727,153 for RETAIL STORE HAVING A SYSTEM OF RECEIVING ELECTRONICCOUPON INFORMATION FROM A PORTABLE CARD AND SENDING THE RECEIVED COUPONINFORMATION TO OTHER PORTABLE CARDS, the contents of which is hereinincorporated by reference.

FIG. 10 is a block diagram of display kiosk 1710 shown in FIGS. 1, 3,and 4A. Magnetic disk drive 1725 provides storage of programs and ofproduct data. The product data stored on disk 1725 includes product namedata and product location data. Optical disk drive 1735 contains aCD-ROM (Compact Disk-Read Only Memory) disk that stores product imagedata. The contents of CD-ROM 1737 tend to remain current for at leastseveral months, since the packaging of a product corresponding to acertain UPC code tends to remain constant over time. Preferably, CD-ROM1737 can be obtained from a national supplier.

CRT display 1717 is 1024 pixel rows by 1280 pixel columns. Video ram1735 has 1024×1280 locations, a location for each pixel on display 1717.CRT controller 1737 has circuitry to read video ram 1735 to generate andsend signals to CRT 1717. Thus, the address of a pixel in video ram 1735determines the location of the pixel on display 1717.

CPU 1750 executes program 1722, in random access, addressable memory1720, to display information reflecting the contents of a customer card.CPU 1750 displays the information on CRT display 1717, by writing pixeldata into video RAM 1735. CRT controller 1737 reads the pixel data fromRAM 1737 to send video signals to CRT 1717.

FIGS. 11A and 11B show some data structures within display kiosk 1710.Structure 11100 includes image data for displaying an image of productscorresponding to coupons on a customer card. Structure 11100 normallyresides on CD-ROM 1737. Structure 11100 includes UPC table 11110, whichis a list of entries sorted by UPC code. Each entry in table 11110includes three fields. A first field is a UPC code; a second field is anaction code, described in more detail below; and a third field is apointer to video data 11120 for the product identified by the UPC code.Video data 11120 is a group of records each containing pixel data for arespective product. CPU 1750 uses the pointer, in the third field of anentry in table 11100, to access a selected record of pixel data 11120.

During processing by CPU 1750, various parts of data structure 11100 maybe automatically brought into memory 1720 with a virtual memory mapping,as is well known in the art.

Data structure 11200 stores product location information. In contrast todata structure 11100, data structure 11200 tends to contain productinformation that is specific to store 1000. Data structure 11200normally resides on disk 1725. Data structure 11200 includes table11210, which is a list of entries sorted by UPC code. Structure 11200also includes spacial location data 11200, which is a group of recordseach containing ASCII (American Standard Code for InformationInterchange) text identifying the spatial location of a respectiveproduct. Each entry in table 11210 includes a UPC code in a first field,an action code in a second field, and a pointer to a selected locationdata record 11220 in a third field. CPU 1750 uses the pointer to accessa selected record of location information.

Thus, memory 1720, magnetic disk 1725, and optical disk drive 1735,together act to store product image and product location information.

CPU 1750 brings various parts of data structure 11200 into memory 1720,using a virtual memory mapping scheme.

Data structure 11300 includes table 11310 and supplementary product data11320. Data structure 11300 normally resides on disk 1725. Supplementaryproduct data contains ASCII text providing additional information aboutproducts in the store. As shown in data structure 11300, supplementaryproduct record 11325 provides information about a product different fromthe product identified in the corresponding entry in table 11310.

FIG. 12 is a block diagram of checkout counter 900 shown in FIG. 4B.Disk 925 provides long term storage. CPU 950 executes instructions inrandom access, addressable memory 920.

CPU 950 and program 922 act to detect a product scanned by UPC reader910, determine a reference price for the product, search for theproduct's identification in the memory of a customer card, and deduct adiscount from the reference price if the product is identified in thecustomer card memory. CPU 950 then displays the price of the product ondisplay 917. CPU 950 writes coupon redemption data onto disk 925.Periodically, CPU 950 sends marketing redemption data to a marketresearch center through modem 930. Periodically, CPU 950 also sendsclearing house redemption data to a clearing house through modem 930.

FIG. 13 shows a processing performed by CPU 1750 and program 1722 indisplay kiosk 1710, when a customer inserts a card into card interface1715. When a customer, such as customer 310, inserts customer card 315into interface slot 1715, a switch (not shown) in interface slot 1715alerts CPU 1750 that a card has been inserted into the slot. When acustomer card is in interface slot 1715, conductive contacts (not shown)inside interface slot 1715 touch each card contact 7420. Subsequently,CPU 1750 causes card interface 1725 to reset the card by applying aclock signal to card contact 7423. The customer card then answers thereset by sending a block of data, including identification data 8467 andauthorization data 8468, through card contact 7427. CPU 1750 thenreceives the answer-to-reset from the card (step 13002). CPU 1750 thensends a data block containing a station-type code indicating a displaykiosk (step 13004). CPU 1750 then receives the contents of table 8435 inmemory 8460 of the customer card, and temporarily stores these tablecontents in memory 1720 of the display kiosk (step 13005). CPU 1750selects the first entry in table 8435 (step 13010). CPU 1750 displaysproduct and price information for the presently selected entry ondisplay 1717. (Step 13040). If there are entries remaining (step 13042),CPU 1750 selects the next entry in table 8435 (step 13045) andprocessing proceeds to step 13040. If there are no entities remaining(step 13042), there is no further processing shown in FIG. 13.

Steps 13040, 13042, and 13045 may execute repeatedly without manualintervention. For example, step 13040 may pause for 10 seconds beforecontrol passes to the next step. Alternatively, step 13040 may pauseuntil the user presses a button entitled DISPLAY NEXT COUPON (not shown)on station 1710.

The communication protocol between display kiosk 1710 and a customercard is described in more detail in ISO/IEC 7816-3: 1989 (E),Identification cards--Integrated circuit(s) cards with contacts--Part 3:Electronic signals and transmission protocols; and ISO/IEC 7816-3:1989/Amd. 1: 1992 (E), Part 3: Electronic signals and transmissionprotocols, AMENDMENT 1: Protocol type T=1, synchronous half duplex blocktransmission protocol. Both of these standards are promulgated by theInternational Organization for Standardization (ISO) and distributed bythe American National Standards Institute (ANSI).

FIGS. 14A and 14B show the processing of step 13040 of FIG. 13 in moredetail. To display an entry in table 8435, CPU 1750 searches for theentry's UPC code in image data index 11110. (step 14005). If CPU 1750finds the UPC code in the image index (step 14030), CPU 1750 determineswhether the second field of the found entry is equal to 1(step 14040).If the second field is equal to 1, CPU 1750 uses the third field as apointer to an image data record 11120 and sends this selected record tovideo RAM 1735 (step 14050). If CPU 1750 does not find the UPC code inthe image index (step 14030) or determines that the second field of thefound entry is not equal to 1 (step 14040), CPU 1750 skips step 14050.

CPU 1750 then reads discount information 8435 from the customer card,translates the binary-encoded numerical discount data into characterdata, translates the character data into graphics data, and sends thegraphics data to video RAM 1735 (step 14055).

Next, CPU 1750 searches the product location index 11210 (step 14060)and if the UPC code is found in the location index (step 14065), and thesecond field of the found entry is 1 (step 14070), CPU 1750 uses thethird field of the found entry to point to a selected record of locationtext 11220. CPU 1750 translates this location text to pixel data andsends the pixel data to video RAM 1735. (step 14075). If the UPC code isnot found in the location index (step 14065) or the second field of thefound entry is not equal to 1 (step 14070), CPU 1750 skips step 14075.

CPU 1750 then searches for the UPC code in related product index 11310(step 14080) and if the UPC code is found (step 14085), CPU 1750 readsthe second field of the found entry (step 14090) and if the second fieldis equal to 1, CPU 1750 uses the third field as a pointer to textdescribing the related product, translates the text to pixel data andsends the pixel data to video RAM 1735 (step 14095). If the UPC code isnot found or if the second field of the found entry is not equal to 1(step 14090), CPU 1750 skips step 14095.

CRT controller 1737 reads video RAM 1735 to generate and send displaysignals to CRT 1717 (step 14100).

In other words, data structure 11100 stores a certain type of productinformation (product image data), and data structure 11200 stores twoother types of product information (a verbal description of the productand a location of the product). CPU 1750 reads a coupon from the memoryof a card, in response to a person inserting the card into slot 1715,and generates, responsive to the coupon, a display signal. CPU 1750generates the display signal by using the UPC code in the read coupon toaccess data structure 11100, and by using the UPC code in the readcoupon to access data structure 11200.

FIGS. 15A, 15B, 15C, and 15D show data flows within display kiosk 1710during the processing of the method shown in FIGS. 14A and 14B. FIG. 15Ashows a data flow during the processing of step 14050. CPU 1750 andprogram 1722 read a selected record of product image data 11120 andsends data 11120 to data port 1742 of video RAM 1735. CPU 1750 andprogram 1722 also send an address to address port 1740, to determinewhere pixels will be displayed on display 1717. As shown in FIG. 15A,the first four digits of the address signal specify the row on display1717 and the last four digits specify the column on display 1717.Product image data 11120 is displayed beginning at row 0200, column0250.

FIG. 15B shows a data flow within display kiosk 1710 when CPU 1750executes step 14055. CPU 1750 and program 1722 read binary-encodeddiscount data 8435 from a customer card, translate the discount data topixel data, and send the pixel data to data port 1742 of video RAM 1735.CPU 1750 and program 1722 also send an address signal 01000100 toaddress port 1740, to display the discount data beginning at row 100,column 100.

FIG. 15C shows a data flow within display kiosk 1710 when CPU 1750executes step 14075. CPU 1750 and program 1722 read a selected record ofASCII location data 11220, translate the ASCII data to pixel data, andsend the pixel data port 1742 of video RAM 1735. CPU 1750 and program1722 also send an address signal 01000640 to address port 1740, todisplay the location data beginning at row 100, column 640.

FIG. 15D shows a data flow within display kiosk 1710 when CPU 1750executes step 14095. CPU 1750 and program 1722 read a selected record ofASCII related product data 11320, translate the ASCII data to pixeldata, and send the pixel data port 1742 of video RAM 1735. CPU 1750 andprogram 1722 also send an address signal 07500640 to address port 1740,to display the related product data beginning at row 750, column 640.

FIG. 16 shows a view of the CRT display 1717 after CPU 1750 performs theprocessing of FIGS. 14A and 14B. Pixel 16005 has coordinates (200, 250),meaning that pixel 16005 is in the row 200, column 250 of CRT display1717. Pixel 16005 is the upper left of a display region for productimage data. Pixel 16010, having coordinates (100, 100), is the upperleft of a display region for coupon discount information. Pixel 16015,having coordinates (100, 640), is the upper left of a display region forproduct location information. Pixel 16020, having coordinates (750,640), is the upper left of a display region for related productinformation.

Because the processing of FIGS. 14A and 14B writes the image of theproduct to video ram 1735 first, and then writes other data, the otherdata will overwrite some of the image data in video ram 1735. Thus, theother data will appear superimposed over the product image, as shown inFIG. 16.

FIG. 17 shows the result of another processing mode of display kiosk1710. Display kiosk 1710 uses printer 1752 to print a shopping list ontopaper 1754.

FIG. 18 shows a processing performed by CPU 950 and program 922 incheckout counter 900, when a customer checks out of store 1000. When acustomer, such as customer 290, inserts customer card 295 into interfaceslot 914, a switch (not shown) in interface slot 914 alerts CPU 950 thata card has been inserted into the slot. When a customer card is ininterface slot 914, conductive contacts (not shown) inside interfaceslot 914 touch each card contact 7420. Subsequently, CPU 950 causes cardinterface 925 to reset the card by applying a clock signal to cardcontact 7423. (If the card is a customer card, the card then answers thereset by sending a block of data, including identification data 8467 andauthorization data 8468, through card contact 7427.) CPU 950 thenreceives the answer-to-reset from the card (step 18002). CPU 950 thensends a data block containing a station-type code indicating a checkoutstation (step 18004). CPU 950 then receives the contents of table 8435in memory 8460 of the customer card, and temporarily stores these tablecontents in memory 920 of the checkout station (step 18005). During step18005, CPU 950 also causes customer card 295 to remove all entries fromlist 8435, so that the electronic coupons in the list cannot be redeemedagain. When the checkout clerk (not shown) moves a product past UPCreader 910, UPC reader 910 detects the UPC code on the product and sendsthe UPC code to CPU 750 (step 18010). CPU 950 searches the receivedtable contents to determine whether the product scanned is identified inthe table (step 18020). If the product is in the received table, CPU 950subtracts the discount, as determined by the discount data stored in thereceived table, from a product reference price read from disk 925 (step18030), and displays the resulting price of the product on display 917(step 18040). If the product is not in the received table (step 18020),CPU 950 skips step 18030. If there are products remaining (step 18042),processing proceeds to step 18010. If there are no products remaining(step 18042), the total price is displayed (step 18044).

Product data customer identification data 8467, authorization data 8468,and the data in list 8435 are each a type of signal.

In summary, after UPC barcode reader 910 scans a product, processor 950determines eligibility for a discount. If a product qualifies, processor950 displays the discounted price on display 917.

FIG. 19 shows a processing performed by one of the customer cards, suchas customer card 215, in the preferred retail system. After the card isreset through contacts 2420, the customer card sends an "answer toreset" data block in accordance with the ISO standard ISO/ICE 7816-3:1989(E), cited above. The customer card sends identification data 8467and authorization data 8468 in the answer-to-reset data block (step19010). If the station then sends a block of data to the customer card,the customer card then receives the block of data through contact 7427(step 19015). If the block contains a station-type code indicating aproduct station (step 19020), the customer card then adds product couponinformation, from a certain location in the block, to the list 8435(step 19030). If the block does not contain a station-type codeindicating a product station (step 19020), processing proceeds to step19070.

If the customer card is not eligible, the station will not send a blockof data, step 19015 therefore does not execute, and processing ceasesuntil the customer card is reinserted into a station, at which time thestation will reset the card and processing will restart at step 19010.

Alternatively, if the block contains a station-type code indicating adisplay kiosk (step 19070), the customer card then sends list 8435 tothe display kiosk (step 19080). In other words, CPU reads list 8435 frommemory 8460, in response to a customer inserting card 215 into displaykiosk 710, and sends a signal corresponding to the list 8435 to thedisplay kiosk (step 19080).

Alternatively, if the block contains a station-type code indicating aCheckout station (step 19090), the customer card then sends list 8435 tothe display kiosk (step 19010). In other words, CPU 2450 reads list 8435from memory 8460, in response to a customer inserting card 215 intocheckout station 915, and sends a signal corresponding to the list 8435to the checkout station (step 19100).

FIG. 20 shows a block diagram of a preferred retail system includingmarketing research center 990, with disk 995, CPU 950, and memory 920.FIG. 20 also shows a plurality of checkout stations 900. Periodically,each checkout station 900 sends a block of data summarizing theredemption transactions. The checkout stations send the data blocks,over telephone lines 941, to research center 990. Checkout stations 903are located within a single company. Checkout stations 903 are similarto checkout stations 900, described above, except that checkout stations903 have circuitry for communicating over network 912. Checkout stations903 send transaction data blocks to central financial computer 911located within the company. Central financial computer 911 periodicallysends the compiled transaction data to market research center 990, overtelephone lines 941. Central financial computer 911 also periodicallysends clearing house redemption data to an electronic clearing house(not shown), over telephone lines 941.

FIGS. 21-26 show a second preferred embodiment of the present invention.The second preferred system has features similar to those of the firstpreferred system, with additional features described below. In thefollow description, elements of the second preferred systemcorresponding to elements of the first preferred system are labelledwith corresponding reference numbers.

FIG. 21 is a block diagram of display kiosk 21710. CPU 1750 executesprogram 21722, in random access, addressable memory 1720, to displayproduct information reflecting the contents of a customer card. CPU 1750displays the product information on CRT display 1717, by writing pixeldata into video RAM 1735. CRT controller 1737 reads the pixel data fromRAM 1737 to send video signals to CRT 1717.

FIGS. 22A, 22B, and 22C show some data structures within the secondpreferred display kiosk 21710. Structures 11100 and 11200 in FIG. 22Aand 11300 in FIG. 22B are described above in connection with the firstpreferred display kiosk.

In FIG. 22B Structure 22400 contains image data for displaying a map forindicating the spacial location of products corresponding to coupons ona customer card. Structure 22400 normally resides on disk 1725.Structure 22400 includes UPC table 22410, which is a list of entriessorted by UPC code. Each entry in table 22410 includes three fields. Afirst field is a UPC code; a second field is an action code, describedin more detail below; and a third field is a pointer to pixel data for acertain map.

Structure 22400 also includes video data 22420, which is a group ofrecords each containing pixel data for a respective map. CPU 1750 usesthe pointer, in the third field of an entry in table 22410, to access aselected record of pixel data 22420. In FIG. 22B, multiple pointerspoint to a common map, the map for the ground floor of store 1000,because the location of multiple products can be indicated on thiscommon map. Another pointer points to a map for the basement floor ofstore 1000, because the product corresponding to this pointer is locatedin the basement of store 1000. Another pointer points to a road mapindicating the location of a store 1500 (not shown), because the productcorresponding to this other pointer is located in store 1500.

In FIG. 22C, table 22510 stores coordinate for displaying a map locationof products corresponding to coupons on a customer card. Table 22510normally resides on disk 1725. Each entry in table 22410 includes fourmemory fields. A first field is a UPC code, a second field is an actioncode, a third field is a Y coordinate in the form of a pixel row numberfor displaying the location of a product, and a fourth field is an Xcoordinate in the form of a pixel column number for displaying thelocation of the product.

FIG. 23 shows a processing performed by CPU 1750 and program 1722 indisplay kiosk 1710, when a customer inserts a card into card interface1715. When a customer, such as customer 310, inserts customer card 315into interface slot 1715, a switch (not shown) in interface slot 1715alerts CPU 1750 that a card has been inserted into the slot. When acustomer card is in interface slot 1715, conductive contacts (not shown)inside interface slot 1715 touch each card contact 7420. Subsequently,CPU 1750 causes card interface 1725 to reset the card by applying aclock signal to card contact 7423. The customer card then answers thereset by sending a block of data, including identification data 8467 andauthorization data 8468, through card contact 7427. CPU 1750 thenreceives the answer-to-reset from the card (step 23002). CPU 1750 thensends a data block containing a station-type code indicating a displaykiosk (step 23004). CPU 1750 then receives the contents of table 8435 inmemory 8460 of the customer card, and temporarily stores these tablecontents in memory 1720 of the display kiosk (step 23005). CPU 1750selects the first entry in table 8435 (step 23010). CPU 1750 displaysproduct and price information for the presently selected entry ondisplay 1717. (Step 23040). If there are entries remaining (step 23042),CPU 1750 selects the next entry in table 8435 (step 23045) andprocessing proceeds to step 23040. If there are no entries remaining(step 23042), there is no further processing shown in FIG. 23.

Steps 23040, 23042, and 23045 may execute repeatedly without manualintervention. For example, step 23040 may pause for 10 seconds beforecontrol passes to the next step. Alternatively, step 23040 may pauseuntil the user presses a button entitled DISPLAY NEXT COUPON (not shown)on station 21710.

FIGS. 24A and 24B show the processing of step 23040 of FIG. 23 in moredetail. To display information for an entry in table 8435, CPU 1750searches for the entry's UPC code in map image index 22410. (step24005). If CPU 1750 finds the UPC code in map image index 22410 (step24030), CPU 1750 determines whether the second field of the found entryis equal to 1 (step 24040). If the second field is equal to 1, CPU 1750uses the third field as a pointer to a map image record 22420 and sendsthis selected record to video RAM 1735 (step 24050). If CPU 1750 doesnot find the UPC code in map image index 22410 (step 24030) ordetermines that the second field of the found entry is not equal to 1(step 24040), CPU 1750 skips step 24050.

CPU 1750 then reads discount information 8435 from the customer card,translates the binary-encoded numerical discount data into characterdata, translates the character data into graphics data, and sends thegraphics data to video RAM 1735 (step 24055).

Next, CPU 1750 searches the product location index 11210 (step 24060)and if the UPC code is found in the location index (step 24065), and thesecond field of the found entry is 1 (step 24070), CPU 1750 uses thethird field of the found entry to point to a selected record of locationtext 11220. CPU 1750 translates this location text to pixel data andsends the pixel data to video RAM 1735. (step 24075). If the UPC code isnot found in the location index (step 24065) or the second field of thefound entry is not 1 (step 24070), CPU 1750 skips step 24075.line

Next, CPU 1750 searches the product coordinate table 22510 (step 24080)and if the UPC code is found in the location index (step 24085), and thesecond field of the found entry is 1 (step 24090), CPU 1750 uses thethird and fourth fields to generate an address signal for video ram1735. CPU 1750 generates a data signal for video ram 1735 to display ablock cursor at a location on CRT 1717 corresponding to the location ofthe product (step 24095). If the UPC code is not found in the locationindex (step 24085) or the second field of the found entry is not 1 (step24090), CPU 1750 skips step 24095.

CRT controller 1737 reads video RAM 1735 to generate and send displaysignals to CRT 1717 (step 24100).

FIGS. 25A, 25B, 25C, and 25D show data flows within display kiosk 1710during the processing of the method shown in FIGS. 24A and 24B. FIG. 25Ashows a data flow during the processing of step 24050. CPU 1750 andprogram 21722 read a selected record of map image data 22420 and sendsdata 22420 to data port 1742 of video RAM 1735. CPU 1750 and program21722 also send an address to address port 1740, to determine wherepixels will be displayed on display 1717. As shown in FIG. 25A, thefirst four digits of the address signal specify the row on display 1717and the last four digits specify the column on display 1717. Map imagedata 22420 is displayed beginning at row 0100, column 0100.

FIG. 25B shows a data flow within display kiosk 21710 when CPU 1750executes step 24055. CPU 1750 and program 21722 read binary-encodeddiscount data 8435 from a customer card, translate the discount data topixel data, and send the pixel data to data port 1742 of video RAM 1735.CPU 1750 and program 21722 also send an address signal 09000100 toaddress port 1740, to display the discount data beginning at row 900,column 100.

FIG. 25C shows a data flow within display kiosk 21710 when CPU 1750executes step 24075. CPU 21750 and program 21722 read a selected recordof ASCII location data 11220, translate the ASCII data to pixel data,and send the pixel data port 1742 of video RAM 1735. CPU 1750 andprogram 21722 also send an address signal 09500100 to address port 1740,to display the location text beginning at row 950, column 100.

FIG. 25D shows a data flow within display kiosk 1710 when CPU 1750executes step 24095. CPU 1750 and program 21722 read a the third andfourth fields of an entry in coordinate table 22510 to generate anaddress signal for address port 1740. CPU 1750 and program 21722generate a data signal for data port 1742 to generate a block cursor ata CRT display location corresponding to the address signal.

FIG. 26 shows a view of the CRT display 1717 after CPU 1750 performs theprocessing of FIGS. 24A and 24B. Pixel 26005 has coordinates (100, 100),meaning that pixel 26005 is in the row 100, column 100 of CRT display1717. Pixel 26005 is the upper left of a display region for map imagedata. Pixel 26010, having coordinates (900, 100), is the upper left of adisplay region for coupon discount information. Pixel 26015, havingcoordinates (950, 100), is the upper left of a display region forproduct location information. Pixel 26025, having coordinates (400,950),is the upper left of a display region for the block cursor when theblock cursor is identifying the spacial location of Old World Pasta.

Thus, the preferred systems provide a convenient and stimulatingshopping environment that allows the user to conveniently review thecoupons stored on a customer card.

Additional advantages and modifications will readily occur to thoseskilled in the art. The invention in its broader aspects is thereforenot limited to the specific details, representative apparatus, andillustrative examples shown and described. Accordingly, departures maybe made from such details without departing from the spirit or the scopeof Applicants' general inventive concept. The invention is defined inthe following claims.

What is claimed is:
 1. In a system including a communication device anda plurality of portable cards each having a memory, a method ofoperating the system comprising the steps of:reading a first signal fromthe memory of a card in the plurality of cards, in response to a personpresenting the card at the communication device, the first signalcorresponding to a product, the first signal having a respective fieldfor designating a coupon redemption value; generating, responsive to thefirst signal, a second signal corresponding to a location of theproduct; and displaying the second signal.
 2. The method of claim 1further includingreceiving a third signal corresponding to a product;and determining a price for the product depending on whether the firstsignal corresponds to third signal.
 3. The method of claim 1 wherein thesystem further includes a memory area containing product information,and the generating step include the steps ofaccessing the memory areausing the first signal; and generating the second signal by reading fromthe memory area.
 4. The method of claim 1 wherein the system furtherincludes a cathode ray tube (CRT), and displaying step includes the stepofdisplaying the second signal on the CRT.
 5. The method of claim 1wherein the system further includes a printer for printing on asubstrate, and wherein the method includesdisplaying, using the printer,the second signal on the substrate.
 6. The method of claim 1 wherein thesystem further includes a first memory area containing a first type ofproduct information, and a second memory area containing a second typeof product information, and the generating step include the stepsofaccessing the first memory area using the first signal; and accessingthe second memory area using the first signal; and generating the secondsignal by reading from the first and second memory areas.
 7. A retailsystem comprising:a plurality of portable cards each having a respectivememory for storing a first signal corresponding to a product the firstsignal having a respective field for designating a coupon redemptionvalue; a communication device; first memory area; a reader for readingthe first signal from the memory of a card in the plurality of cards, inresponse to a person presenting the card at the communication device; agenerator for accessing the first memory area, using the first signal,to generate a second signal corresponding to a location of the product;and a display for displaying the second signal.
 8. The retail system ofclaim 7 further including a store having a roof structure, wherein theproduct is under the roof structure and the display is under the roofstructure.
 9. The retail system of claim 7 further includinga secondmemory area for storing a signal containing a verbal description of theproduct,wherein the generator acts to access both the first and secondmemory areas, using the first signal, to produce the second signal. 10.The retail system of claim 7 further includinga receiver for receiving athird signal corresponding to a product; and a determiner fordetermining a price for the product depending on whether the firstsignal corresponds to the third signal.
 11. A method of operating aretail system including a plurality of product areas, a plurality ofportable cards each having a memory, a first communication device, and acheckout area having a second communication device, the methodcomprising the steps of:a first reading step of reading a first signalfrom the memory of a card in the plurality of cards, in response to aperson presenting the card at the first communication device, the firstsignal corresponding to a product in one of the product areas, the firstsignal having a respective field for designating a coupon redemptionvalue; displaying a location of the product in accordance with the firstsignal; removing the product from the product area; and a second readingstep of reading the first signal from the memory of the card, inresponse to a person presenting the card at the second communicationdevice.
 12. The method of claim 11 further including the stepofreceiving a second signal corresponding to a product; and determininga price for the product depending on whether the first signal, read inthe second reading step, corresponds to the second signal.
 13. Themethod of claim 1 wherein the system further includes an electronicdisplay, and the displaying step includesdisplaying the second signal onthe electronic display.
 14. The method of claim 1 wherein the displayingstep includes displaying a verbal description of the product with thelocation of the product.
 15. The method of claim 1 wherein thedisplaying step includes displaying the location of the product on amap.
 16. The system of claim 7 wherein the display includes anelectronic display.
 17. The system of claim 7 wherein the displayincludes a cathode ray tube.
 18. The system of claim 7 wherein thedisplay includes a printer.
 19. The system of claim 7 wherein thegenerator includes circuitry for generating the location of the producton a map.
 20. The method of claim 11 wherein the system further includesan electronic display, and the displaying step includesdisplaying on theelectronic display.
 21. The method of claim 11 wherein the systemfurther includes a cathode ray tube, and the displaying stepincludesdisplaying on the cathode ray tube.
 22. The method of claim 11wherein the displaying step includes displaying a verbal description ofthe product with the location of the product.
 23. The method of claim 11wherein the displaying step includes displaying the location of theproduct on a map.
 24. In a system including a communication device and aplurality of portable cards each having a memory, a method of operatingthe system comprising the steps of:reading a first signal from thememory of a card in the plurality of cards, in response to a personpresenting the card at the communication device, the first signalcorresponding to a product; generating, responsive to the first signal,a second signal corresponding to a location of the product on a map; anddisplaying the second signal.
 25. The method of claim 24 wherein thereading step includes reading a first signal corresponding to pricinginformation for a product.
 26. The method of claim 24 wherein the systemfurther includes an electronic display, and the displaying stepincludesdisplaying the second signal on the electronic display.
 27. Themethod of claim 24 wherein the displaying step includes displaying averbal description of the product with the location of the product. 28.The method of claim 24 further includingreceiving a third signalcorresponding to a product; and determining a price for the productdepending on whether the first signal corresponds to third signal. 29.The method of claim 24 wherein the system further includes a memory areacontaining product information, and the generating step include thesteps ofaccessing the memory area using the first signal; and generatingthe second signal by reading from the memory area.
 30. The method ofclaim 24 wherein the system further includes a cathode ray tube (CRT),and displaying step includesdisplaying the second signal on the CRT. 31.The method of claim 24 wherein the system further includes a printer forprinting on a substrate, and wherein the method includesdisplaying,using the printer, the second signal on the substrate.
 32. The method ofclaim 24 wherein the system further includes a first memory areacontaining a first type of product information, and a second memory areacontaining a second type of product information, and the generating stepinclude the steps ofaccessing the first memory area using the firstsignal; and accessing the second memory area using the first signal; andgenerating the second signal by reading from the first and second memoryareas.
 33. A retail system comprising:a plurality of portable cards eachhaving a respective memory for storing a first signal corresponding to aproduct; a communication device; first memory area; a reader for readingthe first signal from the memory of a card in the plurality of cards, inresponse to a person presenting the card at the communication device; agenerator for accessing the first memory area, using the first signal,to generate a second signal corresponding to a location of the producton a map; and a display for displaying the second signal.
 34. The systemof claim 33 wherein the display includes an electronic display.
 35. Thesystem of claim 33 wherein the display includes a cathode ray tube. 36.The system of claim 33 wherein the display includes a printer.
 37. Theretail system of claim 33 further including a store having a roofstructure, wherein the product is under the roof structure and thedisplay is under the roof structure.
 38. The retail system of claim 33further includinga second memory area for storing a signal containing averbal description of the product, wherein the generator acts to accessboth the first and second memory areas, using the first signal, toproduce the second signal.
 39. The retail system of claim 33 furtherincludinga receiver for receiving a third signal corresponding to aproduct; and a determiner for determining a price for the productdepending on whether the first signal corresponds to the third signal.40. A method of operating a retail system including a plurality ofproduct areas, a plurality of portable cards each having a memory, afirst communication device, and a checkout area having a secondcommunication device, the comprising the steps of:a first reading stepof reading a first signal from the memory of a card in the plurality ofcards, in response to a person presenting the card at the firstcommunication device, the first signal corresponding to a product in oneof the product areas; displaying, responsive to the first signal, alocation of the product on a map; removing the product from the productarea; and a second reading step of reading the first signal from thememory of the card, in response to a person presenting the card at thesecond communication device.
 41. The method of claim 40 furtherincluding the step ofreceiving a second signal corresponding to aproduct; and determining a price for the product depending on whetherthe first signal, read in the second reading step, corresponds to thesecond signal.
 42. The method of claim 40 wherein the second readingstep includes reading a first signal corresponding to pricinginformation for a product.
 43. The method of claim 40 wherein the systemfurther includes an electronic display, and the displaying stepincludesdisplaying on the electronic display.
 44. The method of claim 40wherein the system further includes a cathode ray tube, and thedisplaying step includesdisplaying on the cathode ray tube.
 45. Themethod of claim 40 wherein the displaying step includes displaying averbal description of the product with the location of the product.